""ET TROJAN VNCStartServer USR Variant CnC Beacon""
SID: 2035523
Revision: 3
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_11_12, deployment Perimeter, signature_severity Major, tag c2, updated_at 2019_12_02, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel
Reference:
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md5
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d66956e0ee70a60e19a4f310339d28a9
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: any
Flow: established,to_server
Contents:
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Value: "|00 00 00 19 00 00 00|" Depth: 7 Offset: 1
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Value: "|01 00 00|"
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Value: "USR-"
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Value: "|00|"
Within: 4
PCRE:
Special Options:
- fast_pattern